MIL ON WITH MULTIPLE COIL PRIMARY CIRCUIT DTCS P0351 THROUGH P0356—3.0L ENGINE
TSB 05-11-1
Ford: 2005 Escape
Mercury: 2005 Mariner
ISSUE
Some 2005 Escape/Mariner vehicles equipped with a 3.0L engine may exhibit a Malfunction Indicator Lamp (MIL) on with two or more diagnostic trouble codes (DTCs) for coil on plug (COP) primary circuit faults (P0351 through P0356). This may be due to the spark plugs causing RF interference with the PCM, resulting in damage to the PCM and COPs.
ACTION
It may be necessary to replace the PCM, COPs and install new level spark plugs. Refer to the following Service Procedure.
SERVICE PROCEDURE
- Perform KOER test.
- If there is only one (1) coil circuit primary DTC (P035x) follow procedure “A”.
- If there are two (2) or more coil circuit primary DTCs (P035x-P035x) follow procedure “B”.
PROCEDURE "A"
- Remove any spark plug and inspect for a 2-digit date code (Figure 1). If the date code is not present, replace all six (6) spark plugs with part number AGSF-32W-M1F4.
- Continue with normal PC/ED diagnostics for the DTC.
PROCEDURE "B"
- Remove any spark plug and inspect for a 2-digit date code (Figure 1). If the date code is not present, replace all six (6) spark plugs with part number AGSF-32W-M1F4.
- Replace all six (6) COPs.
- Replace PCM.
- Reprogram the passive antitheft system (PATS) keys.
Part Information
| PART NUMBER | PART NAME |
|---|---|
| AGSF-32W-M1F4 | Spark Plug |
| 1L8Z-12029-AB | Ignition Coil |
| 5L8Z-12A650-AAD | PCM |
| 5L8Z-12A650-LH | PCM |
WARRANTY STATUS
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage
NOTE
The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford, Lincoln, or Mercury dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supercede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources.
Operations
| OPERATION | DESCRIPTION | TIME | DEALER CODING | CONDITION CODE |
|---|---|---|---|---|
| 051101A | 2005 Escape/Mariner 3.0L: Check For Diagnostic Trouble Codes, Inspect Spark Plug For Date Code Failed, Replace Six Spark Plugs (Do Not Use With 12650D, 12650D3, 12650D6, 12650D63, 12650D64, 12405A, 15607B, 15607C) | 2.1 Hrs. | LABOR OPERATION “A” USE (12405) | 42 |
| 051101B | 2005 Escape/Mariner 3.0L: Check For Diagnostic Trouble Codes, Inspect Spark Plug For Date Code Failed, Replace Six Spark Plugs, Ignition Coils, Powertrain Control Module, Program Ignition Keys (Do Not Use With 12650D, 12650D3, 12650D6, 12650D63, 12650D64, 12405A 15607B, 15607C) | 2.2 Hrs. | LABOR OPERATION “B” USE (12A650) | 42 |
